28997367 has 12 divisors (see below), whose sum is σ = 44975736. Its totient is φ = 16569840.

The previous prime is 28997347. The next prime is 28997377. The reversal of 28997367 is 76379982.

It is not a de Polignac number, because 28997367 - 2⁷ = 28997239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28997317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98484 + ... + 98777.

It is an arithmetic number, because the mean of its divisors is an integer number (3747978).

Almost surely, 2^28997367 is an apocalyptic number.

28997367 is a deficient number, since it is larger than the sum of its proper divisors (15978369).

28997367 is a wasteful number, since it uses less digits than its factorization.

28997367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197278 (or 197271 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 51.

The square root of 28997367 is about 5384.9203336725. The cubic root of 28997367 is about 307.2223841145. Note that the first 3 decimals are identical.

The spelling of 28997367 in words is "twenty-eight million, nine hundred ninety-seven thousand, three hundred sixty-seven".